ELECTRICAL WIRING COMMERCIAL 18TH
EDITION BY PHIL SIMMONS RAY C. MULLIN,
AND MARK C. ODE SOLUTION MANUAL
UPDATED 2026
,TABLE OF CONTENT
1. Commercial Building Plans and Specifications
2. Reading Electrical Working Drawings—Entry Level
3. General Requirements for Conductors
4. Branch Circuits
5. Switches and Receptacles
6. Wiring Methods
7. Motor and Appliance Circuits
8. Feeder Installation and Load Calculation
9. Special Systems
10. Working Drawings—Upper Level
11. Special Circuits (Owner’s Circuits)
12. Panelboard Selection and Installation
13. The Electric Service and Grounding
14. Lamps and Ballasts for Lighting
15. Luminaires
16. Emergency, Legally Required Standby, and Optional Standby Power Systems
17. Overcurrent Protection: Fuses and Circuit Breakers
18. Short-Circuit Calculations and Coordination of Overcurrent Protective Devices
19. Equipment and Conductor Short-Circuit Protection
20. Low-Voltage Remote Control
21. The Cooling System
22. Commercial Utility-Interactive Photovoltaic Systems
,CHAPTER 1: COMMERCIAL BUILDING PLANS AND SPECIFICATIONS
This chapter covers interpreting commercial building plans and specifications, emphasizing
symbols, legends, and notations. It highlights the importance of understanding electrical
schematics, blueprint reading, load calculations, and code compliance. Nurses (in educational
context: technicians or electricians) must ensure accurate interpretation for safety, efficiency,
and proper installation of electrical systems in commercial structures.
1. What is the primary purpose of commercial building plans?
A. To provide a decorative overview of a building
B. To guide construction and electrical installation accurately
C. To list building occupants
D. To record maintenance schedules
Correct Answer: B
Rationale: Building plans serve as detailed guides for construction, including
electrical layouts, ensuring accuracy and safety. Other options are secondary or
unrelated purposes.
2. Which component on a plan indicates electrical outlets?
A. Legend
B. Schematic diagram
C. Receptacle symbol
D. Floor elevation
Correct Answer: C
Rationale: Receptacle symbols specifically indicate outlet locations. Legends explain
symbols, and floor elevations show heights, not outlet placement.
3. Why are legends important on electrical plans?
A. They show the building’s construction cost
B. They explain symbols and abbreviations used in drawings
C. They provide a list of contractors
D. They replace detailed schematics
Correct Answer: B
Rationale: Legends clarify symbols and abbreviations, aiding accurate interpretation.
They do not replace schematics or list costs.
4. Which professional primarily uses commercial electrical plans?
A. Architect only
B. Electrician or electrical technician
C. Interior designer only
D. Building inspector exclusively
Correct Answer: B
Rationale: Electricians rely on plans for installation, while architects design and
inspectors verify compliance. Interior designers rarely use detailed electrical
schematics.
5. What information do specifications in commercial plans provide?
A. Material types, quality, and installation requirements
B. Daily work schedules
C. Furniture placement
D. Occupant demographics
Correct Answer: A
Rationale: Specifications detail materials, methods, and standards for electrical work.
Other options are not included in specifications.
, 6. How does accurate plan reading impact electrical safety?
A. Ensures circuits function as intended and prevent hazards
B. Reduces the number of electricians needed
C. Eliminates the need for inspections
D. Increases building aesthetics
Correct Answer: A
Rationale: Accurate reading prevents miswiring and electrical hazards. Other options
are unrelated to safety.
7. On a commercial plan, what does a dashed line usually represent?
A. Load center location
B. Conduit or wiring path
C. Wall height
D. Furniture placement
Correct Answer: B
Rationale: Dashed lines indicate wiring or conduit routing. Wall height or furniture is
typically solid or differently marked.
8. Which standard must commercial electrical plans comply with?
A. OSHA regulations only
B. NEC (National Electrical Code)
C. Local building aesthetics
D. Manufacturer manuals exclusively
Correct Answer: B
Rationale: NEC ensures electrical safety and compliance. OSHA relates to workplace
safety, but plans must follow NEC codes.
9. When reading a plan, what does a circle with a letter inside usually indicate?
A. Load type
B. Electrical device, such as a switch or outlet
C. Floor level
D. Wall section
Correct Answer: B
Rationale: Circles with letters identify electrical devices; floor levels or wall sections
are labeled differently.
10. Why is scale important on building plans?
A. It allows accurate measurement of distances and placements
B. It makes the plan visually appealing
C. It defines wall color
D. It lists electrical loads
Correct Answer: A
Rationale: Scale ensures accurate translation from plan to physical installation. Other
options do not rely on scale.
11. Which drawing provides the clearest overview of the building layout?
A. Floor plan
B. Wiring schematic
C. Elevation plan
D. Single-line diagram
Correct Answer: A
Rationale: Floor plans show room layout and device locations, while schematics focus
on electrical connections.
12. What is a riser diagram used for?
A. Showing vertical electrical distribution through floors
EDITION BY PHIL SIMMONS RAY C. MULLIN,
AND MARK C. ODE SOLUTION MANUAL
UPDATED 2026
,TABLE OF CONTENT
1. Commercial Building Plans and Specifications
2. Reading Electrical Working Drawings—Entry Level
3. General Requirements for Conductors
4. Branch Circuits
5. Switches and Receptacles
6. Wiring Methods
7. Motor and Appliance Circuits
8. Feeder Installation and Load Calculation
9. Special Systems
10. Working Drawings—Upper Level
11. Special Circuits (Owner’s Circuits)
12. Panelboard Selection and Installation
13. The Electric Service and Grounding
14. Lamps and Ballasts for Lighting
15. Luminaires
16. Emergency, Legally Required Standby, and Optional Standby Power Systems
17. Overcurrent Protection: Fuses and Circuit Breakers
18. Short-Circuit Calculations and Coordination of Overcurrent Protective Devices
19. Equipment and Conductor Short-Circuit Protection
20. Low-Voltage Remote Control
21. The Cooling System
22. Commercial Utility-Interactive Photovoltaic Systems
,CHAPTER 1: COMMERCIAL BUILDING PLANS AND SPECIFICATIONS
This chapter covers interpreting commercial building plans and specifications, emphasizing
symbols, legends, and notations. It highlights the importance of understanding electrical
schematics, blueprint reading, load calculations, and code compliance. Nurses (in educational
context: technicians or electricians) must ensure accurate interpretation for safety, efficiency,
and proper installation of electrical systems in commercial structures.
1. What is the primary purpose of commercial building plans?
A. To provide a decorative overview of a building
B. To guide construction and electrical installation accurately
C. To list building occupants
D. To record maintenance schedules
Correct Answer: B
Rationale: Building plans serve as detailed guides for construction, including
electrical layouts, ensuring accuracy and safety. Other options are secondary or
unrelated purposes.
2. Which component on a plan indicates electrical outlets?
A. Legend
B. Schematic diagram
C. Receptacle symbol
D. Floor elevation
Correct Answer: C
Rationale: Receptacle symbols specifically indicate outlet locations. Legends explain
symbols, and floor elevations show heights, not outlet placement.
3. Why are legends important on electrical plans?
A. They show the building’s construction cost
B. They explain symbols and abbreviations used in drawings
C. They provide a list of contractors
D. They replace detailed schematics
Correct Answer: B
Rationale: Legends clarify symbols and abbreviations, aiding accurate interpretation.
They do not replace schematics or list costs.
4. Which professional primarily uses commercial electrical plans?
A. Architect only
B. Electrician or electrical technician
C. Interior designer only
D. Building inspector exclusively
Correct Answer: B
Rationale: Electricians rely on plans for installation, while architects design and
inspectors verify compliance. Interior designers rarely use detailed electrical
schematics.
5. What information do specifications in commercial plans provide?
A. Material types, quality, and installation requirements
B. Daily work schedules
C. Furniture placement
D. Occupant demographics
Correct Answer: A
Rationale: Specifications detail materials, methods, and standards for electrical work.
Other options are not included in specifications.
, 6. How does accurate plan reading impact electrical safety?
A. Ensures circuits function as intended and prevent hazards
B. Reduces the number of electricians needed
C. Eliminates the need for inspections
D. Increases building aesthetics
Correct Answer: A
Rationale: Accurate reading prevents miswiring and electrical hazards. Other options
are unrelated to safety.
7. On a commercial plan, what does a dashed line usually represent?
A. Load center location
B. Conduit or wiring path
C. Wall height
D. Furniture placement
Correct Answer: B
Rationale: Dashed lines indicate wiring or conduit routing. Wall height or furniture is
typically solid or differently marked.
8. Which standard must commercial electrical plans comply with?
A. OSHA regulations only
B. NEC (National Electrical Code)
C. Local building aesthetics
D. Manufacturer manuals exclusively
Correct Answer: B
Rationale: NEC ensures electrical safety and compliance. OSHA relates to workplace
safety, but plans must follow NEC codes.
9. When reading a plan, what does a circle with a letter inside usually indicate?
A. Load type
B. Electrical device, such as a switch or outlet
C. Floor level
D. Wall section
Correct Answer: B
Rationale: Circles with letters identify electrical devices; floor levels or wall sections
are labeled differently.
10. Why is scale important on building plans?
A. It allows accurate measurement of distances and placements
B. It makes the plan visually appealing
C. It defines wall color
D. It lists electrical loads
Correct Answer: A
Rationale: Scale ensures accurate translation from plan to physical installation. Other
options do not rely on scale.
11. Which drawing provides the clearest overview of the building layout?
A. Floor plan
B. Wiring schematic
C. Elevation plan
D. Single-line diagram
Correct Answer: A
Rationale: Floor plans show room layout and device locations, while schematics focus
on electrical connections.
12. What is a riser diagram used for?
A. Showing vertical electrical distribution through floors
